Chenbro RM245 Series User manual

RM245 Series
Rackmount Chassis User Manual
April 2020 Version 1.2
A document provides an overview of product features, functions, architecture, and support specifications.

RM245 Series
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DISCLAIMERS
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for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or
usage in trade.
This document contains information on products, services and/or processes in development. All information provided here is subject
to change without notice.
The products and services described may contain defects or errors known as errata which may cause deviations from published
specifications. Current characterized errata are available on request.
Chenbro, and the Chenbro logo are trademarks of Chenbro Micom Co., Ltd. in the worldwide.
*Other names and brands may be claimed as the property of others
© 2020 Chenbro Micom Co., Ltd.

RM245 Series
Table of Contents│ 3
Table of Contents
Table of Contents..........................................................................................................................................3
List of Figures................................................................................................................................................4
List of Tables.................................................................................................................................................6
1. Product Overview..........................................................................................................................7
1-1 System Outlook Overview .......................................................................................................8
1-2 Front Panel............................................................................................................................10
1-3 Back Panel.............................................................................................................................11
1-4 Front Control Panel ...............................................................................................................12
1-5 Chassis Dimensions ...............................................................................................................13
1-6 Available Rack Mounting Kit Options (Refer to “Installation”) ................................................14
1-7 System Level Environmental Limits ........................................................................................15
1-8 System Packaging.................................................................................................................16
2. System Components Removal and Installation ............................................................................17
2-1 Top Cover Installation............................................................................................................18
2-2 HDD Cage Installation............................................................................................................19
2-3 Hot-swap HDD Assembly Maintenance..................................................................................20
2-4 Internal 2.5’’ HDD Installation & Removal................................................................................26
2-5 Slim ODD Installation & Removal.............................................................................................27
2-6 System Maintenance .............................................................................................................28
2-7 Fan Assembly Installation ......................................................................................................29
2-8 2.5” 2-bay Drive Cage Installation (Back Panel)......................................................................33
2-9 Full-height PCIe Card Installation...........................................................................................35
2-10 PSU Installation and Removal ..............................................................................................36
2-11 Slide Rail Installation ...........................................................................................................39
3. Backplane....................................................................................................................................41
3-1 Storage Backplane Options....................................................................................................42
3-2 3.5” 12-Port 12Gbps Mini-SAS HD Active Backplane ..............................................................43
3-3 3.5” 12-Port 12Gbps Mini-SAS HD Passive Backplane ............................................................46
3-4 12Gbps 8-Port Mini SAS HD Passive Backplane ......................................................................49
3-5 2 x 2.5’’ Drive Bay Accessory Kit.............................................................................................52
4. Maintenance and Service ............................................................................................................55

RM245 Series
List of Figures│ 4
List of Figures
Figure 1 RM24508 overview....................................................................................................................8
Figure 2 RM24512 overview ....................................................................................................................8
Figure 3 RM24508 major components overview......................................................................................9
Figure 4 RM24512 major components overview......................................................................................9
Figure 5 RM24508 front panel ...............................................................................................................10
Figure 6 RM24512 front panel ...............................................................................................................10
Figure 7 Back panel with single PSU .......................................................................................................11
Figure 8 Back panel with redundant PSU................................................................................................11
Figure 9 Front control panel...................................................................................................................12
Figure 10 Chassis dimensions...................................................................................................................13
Figure 11 Label embossing dimensions ....................................................................................................13
Figure 12 Front top cover installation ......................................................................................................18
Figure 13 Rear top cover installation........................................................................................................18
Figure 14 RM24508 HDD cage installation ...............................................................................................19
Figure 15 RM24512 HDD cage installation ...............................................................................................19
Figure 16 3.5” Hot-swap HDD assembly installation .................................................................................20
Figure 17 3.5” Hot-swap HDD assembly removal......................................................................................20
Figure 18 3.5” HDD installation (tool-less type)........................................................................................21
Figure 19 3.5” HDD removal (tool-less type) ............................................................................................21
Figure 20 3.5” HDD installation (screw type)............................................................................................22
Figure 21 3.5” HDD removal (screw type) ................................................................................................22
Figure 22 2.5” HDD installation in 3.5” tray (screw type)..........................................................................23
Figure 23 2.5” HDD removal in 3.5” tray (screw type) ..............................................................................23
Figure 24 2.5’’ hot-swap HDD assembly installation .................................................................................24
Figure 25 2.5’’ hot-swap HDD assembly removal......................................................................................24
Figure 26 2.5’’ HDD Installation (tool-less type)........................................................................................25
Figure 27 RM24508 internal 2.5'' HDD installation ...................................................................................26
Figure 28 RM24508 internal 2.5'' HDD installation ...................................................................................26
Figure 29 RM24508 internal slim ODD installation ...................................................................................27
Figure 30 RM24508 internal slim ODD removal........................................................................................27
Figure 31 Installation of whole system from the rack ...............................................................................28
Figure 32 Removal of whole system from the rack ...................................................................................28
Figure 33 RM24508 fan assembly installation ..........................................................................................29
Figure 34 RM24508 fan holder installation...............................................................................................29
Figure 35 RM24508 fan module installation.............................................................................................30
Figure 36 RM24508 air baffle installation.................................................................................................30
Figure 37 RM24512 fan assembly installation ..........................................................................................31
Figure 38 RM24512 fan holder installation...............................................................................................31

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Figure 39 RM24512 fan module installation.............................................................................................32
Figure 40 RM24512 air baffle installation.................................................................................................32
Figure 41 Drive cage bracket installation (back panel) ..............................................................................33
Figure 42 Drive cage installation (back panel) ..........................................................................................33
Figure 43 Drive backplane installation (back panel)..................................................................................34
Figure 44 Full-height back panel bracket installation................................................................................35
Figure 45 Cards and brackets installation .................................................................................................35
Figure 46 Single 2U PSU installation.........................................................................................................36
Figure 47 Redundant PSU cage assembly .................................................................................................37
Figure 48 Redundant PSU cage installation ..............................................................................................37
Figure 49 CRPS module installation..........................................................................................................38
Figure 50 CRPS module removal ..............................................................................................................38
Figure 51 Slide rail Installation-1 (384-23803-3300A0) .............................................................................39
Figure 52 Slide rail Installation-2 (384-23803-3300A0) .............................................................................39
Figure 53 Slide rail Installation-3 (384-23803-3300A0) .............................................................................40
Figure 54 Slide rail Installation-4 (384-23803-3300A0) .............................................................................40
Figure 55 Drive tray LED identification .....................................................................................................41
Figure 56 Backplane front view................................................................................................................43
Figure 57 Backplane rear view .................................................................................................................44
Figure 58 Backplane front view................................................................................................................46
Figure 59 Backplane rear view .................................................................................................................47
Figure 60 Backplane front view................................................................................................................49
Figure 61 Backplane rear view .................................................................................................................50
Figure 62 2.5'' 2-bay drive module ...........................................................................................................52
Figure 63 Backplane front view................................................................................................................53
Figure 64 Backplane rear view .................................................................................................................54

RM245 Series
List of Tables│ 6
List of Tables
Table 1 Chenbro RM24508/12 specifications ...........................................................................................7
Table 2 Front control panel ....................................................................................................................12
Table 3 Slide rail options ........................................................................................................................14
Table 4 System environmental specifications summary..........................................................................15
Table 5 System packaging information ...................................................................................................16
Table 6 Product weight information .......................................................................................................16
Table 7 Drive power LED/activity LED behavior ......................................................................................41
Table 8 Backplane specifications ............................................................................................................43
Table 9 Connector and pin header function description ...........................................................................44
Table 10 Dip switch setting.......................................................................................................................45
Table 11 Fan setting for RM24512............................................................................................................45
Table 12 Backplane specifications ............................................................................................................46
Table 13 Connector and pin header function description...........................................................................47
Table 14 MB PWM connector......................................................................................................................48
Table 15 Dip switch setting.......................................................................................................................48
Table 16 Backplane specifications ............................................................................................................49
Table 17 Connector and pin header function description .........................................................................50
Table 18 Fan setting for RM24508............................................................................................................51
Table 19 Backplane specifications ............................................................................................................53
Table 20 Connector and pin header function description .........................................................................54

RM245 Series
Product Overview│ 7
1. Product Overview
RM245 series is a 2U high flexible storage server chassis, and offers flexible solutions by choosing the customers’ modular parts
integrated into the system to fulfill the enterprise demand. This chapter provides a high-level overview of the system features and
available options. More details for each major sub-system, feature, or options are provided in the following chapters.
Table 1 Chenbro RM24508/12 specifications
Feature
Description
MB Form Factor
ATX (12’’ x 9 .6’’)
Dimension
(D x W x H)
557.6 x 438.0 x 87.00 (mm)
21.95’’ x 17.24’’ x 3.43’’
Drive Bay
RM24508: 8 x 3.5’’ Hot-swap, 2 x 2.5’’ Internal, 1 x Slim ODD,
RM24512: 12 x 3.5’’ Hot-swap, 2 x 2.5”Hot-swap (Option), for CRPS Only
Storage Backplane
RM24508: 3.5” 8-port 12Gbps, Mini-SAS HD
RM24512: 3.5” 12-port 12Gbps, Mini-SAS HD, Passive or Active
PSU Form Factor
2U Single or 1+1 CRPS
Indicator
1 x Power Status, 2 x LAN Activity, 1 x UID, 1 x System Alarm, 1 x HDD Status
Front Control
1 x Power On/Off, 1 x UID, 1 x System Reset, 2 x USB3.0
System Security
Intrusion Switch (Option)
Cooling Fan
80 x 38 mm (3, up to 4), Hot-swap
Expansion Slot Opening
3 x Full Height or 7 x Low Profile
Net Weight
9.5 kg/20.93 lb
Gross Weight
12.0 kg/26.43 lb
Cubic Feet
2.89
Container Loading
20’: 260, 40’: 560, 40’H: 616 (Single Packing)

RM245 Series
Product Overview│ 8
1-1 System Outlook Overview
Figure 1 RM24508 overview
Figure 2 RM24512 overview

RM245 Series
Product Overview│ 9
Figure 3 RM24508 major components overview
Figure 4 RM24512 major components overview
A. Front Top Cover
B. Back Top Cover
C. Label Embossing
D. Fan Assembly
E. Server Board
F. Power Supply Unit
G. Slim ODD Bay
H. Internal 2.5”HDD Bays
I. 2.5”HDD Hot-swap Cage

RM245 Series
Product Overview│ 10
1-2 Front Panel
Figure 5 RM24508 front panel
Figure 6 RM24512 front panel
A. Front Control Panel
B. Storage Drive Bay
C. Info Tag
D. Rack Handles
E. Slim ODD Bay

RM245 Series
Product Overview│ 11
1-3 Back Panel
Figure 7 Back panel with single PSU
Figure 8 Back panel with redundant PSU
A. 2U Single Power Supply
B. CRPS
C. I/O Gasket
D. Low Profile Expansion Slots
E. Full Height Expansion Slots
F. 2.5” Hot-swap Drive Bays

RM245 Series
Product Overview│ 12
1-4 Front Control Panel
Figure 9 Front control panel
Table 2 Front control panel
Label
ICON
Indicator, button or connector
A
Power Button
B
UID Button
C
Reset Button
D
USB3.0
E
HDDActivityLED
F
SystemAlarmLED
G
LAN1,LAN2 ActivityLED
H
RackHandle (Left)
I
RackHandle (Right)

RM245 Series
Product Overview│ 13
1-5 Chassis Dimensions
Figure 10 Chassis dimensions
Figure 11 Label embossing dimensions

RM245 Series
Product Overview│ 14
1-6 Available Rack Mounting Kit Options (Refer to “Installation”)
Advisory Note –Available rack and cabinet mounting kits are not designed to support shipment of the server system while installed
in a rack. If you choose to do so, Chenbro advises you verify your shipping configuration with appropriate shock and vibration testing
before shipment. Chenbro does not perform shipping tests which cover the complex combination of unique rack offerings and custom
packaging options.
Caution: Exceeding the specified maximum weight limit of a given rail kit or misalignment of the server in the rack may result in
failure of the rack rails, causing damage to the system or personal injury. Two people to operate or the use of a mechanical assist tool
to install and align the server into the rack is highly recommended.
Available Rack mounting kits:
Table 3 Slide rail options
Part Number
384-23803-3300A0
84H314610-003
Rail Dimension (mm/inch)
835.0/32.90"
599.0/23.60"
Applicable Cabinet-Post to Post (mm/inch)
668.0~936.0/23.60"~36.90"
660.0~838.0/26.00"~33.00"
3 Section/2 Section
3 Section
2 Section
Post to Post Distance (mm/inch)
668.0~936.0/23.60"~36.90"
660.0~838.0/26.00"~33.00"
Traveling Distance (mm/inch)
782.0/30.80"
560.0/22.00"
Support Chassis Width (mm)
438.0
438.5
Loading (kg)
30.8 kg
18.8 kg
Max. Static Loading (kg) for UL
100.0 kg
60.0 kg
Tool-less
Yes
Yes
Support CMA
Yes
No

RM245 Series
Product Overview│ 15
1-7 System Level Environmental Limits
The following table defines the system level operating and non-operating environmental limits.
Table 4 System environmental specifications summary
Parameter
Specification
Temperature
Operating
5ºC to 35ºC (41ºF to 95ºF)
Temperature
Non-Operating
-40ºC to 70ºC (-40ºF to 158ºF)
Humidity
Non-Operating
50% to 90%, non-condensing with a maximum wet bulb of 28°C (at temperatures
from 25°C to 35°C)
Unpackaged
Shock
Non-Operating
Trapezoidal, 25 g, velocity change is based on product weight
Unpackaged
Vibration
Operating
5 Hz @ 0.0002 g2/Hz to 350 Hz @ 0.0002 g2/Hz
Input acceleration is 0.26 g RMS
10 minutes per axis for all 3 axes on all samples
Random control limit tolerance is ± 3 dB
Sag & Bow
Non-Operating
Tolerance analysis among rack, rail and chassis
Actual on rack test with EIA Go-NoGo fixture
EMI
Pre-scan
Radiated Emissions
CISPR CLASS A (under 6 dB):
30~1000 MHz vertical/horizontal
1G~6G GHz vertical/ horizontal
1G~18G GHz vertical/horizontal
ESD
Contact and Air Discharge
Electrostatic Discharge Immunity Test IEC 61000-4-2
RVI
Operating
HDD class:
Class 1: Highest performance, reliability, and data integrity
Class 2: A second tier of performance, reliability, and data integrity
HDD I/O throughput degradation SPEC
Pass/Fail Criteria:
No functional failure during test or post-test diagnostics.
Requirement to pass test is based on IOMeter data throughput (in IO’s per
second) expressed as a percent of Test HDD maximum theoretical baseline
performance
Class1: > 90% of baseline for 4K random writes and > 80% of baseline for
128K sequential writes
Class2: > 85% of baseline for 4K random writes and > 75% of baseline for
128K sequential writes
Mix: > 80% of baseline for 4K random writes and > 70% of baseline for
128K sequential writes
Packaged
Vibration
Non-Operating
ISTA (weight over 68 kg, 1B ; weight equal or less than 68 kg, 1A)
Packaged
Drop
Non-Operating
Drop height change is based on product weight
Non-palletized product:
Investigation: Test requirement is 6 face drops, 8 corner drops and 12 edge
drops for a total of 26 drops
Validation: Test requirement is 6 face drops, 2 corner drops and 3 edge
drops for a total of 11 drops
Palletized product: (Both investigation and validation)
Perform two bottom drops at the specified height, 10 bottom drops at one
half of the specified height
Perform 4 rotational edge drops (one per edge) at the specified height

RM245 Series
Product Overview│ 16
1-8 System Packaging
The original Chenbro packaging, where the server system is delivered, is designed to provide protection for L5 configuration and
tested to meet ISTA (International Safe Transit Association) Test Procedure 1A (2008). The packaging is also designed to be reused
for shipment after the system integration has been completed.
The original packaging includes the shipping box and various protective inner packaging components, which are designed to function
together as a protective packaging system. When reused, all of the original packaging material must be used, including box and each
inner packaging component. In addition, all inner packaging components MUST be reinstalled in the proper location to ensure
adequate protection to the system for subsequent shipment.
Table 5 System packaging information
Part Number
Single/Bulk
Form Factor (mm)
Support level
387-24512-3300A0
Single
730 x 590 x 190
L5
NOTE: The design of the inner packaging components does not prevent improper placement within the packaging assembly.
There is only one correct packaging assembly that will allow the package to meet the ISTA (International Safe Transit Association)
Test Procedure 1A (2008).
Failure to follow the specified packaging assembly instructions may result in damage to the system during shipment.
Table 6 Product weight information
Product
Unpackaged Net Weight
（kg）
Packaged Gross Weight
（kg）
Unpackaged Net Weight
(lb)
Packaged Gross Weight
(lb)
RM24508
9.5
12.0
16.50
26.40
RM24512
9.5
12.0
16.50
26.40
NOTE: An L5 system does not include motherboards, processors, memories, drives, or add-in cards. It is the system
configuration as shipped from Chenbro. Weights of integrated system (system configurations that include the items
above) will vary depending on the final system configuration.

RM245 Series
System Components Removal and Installation│ 17
2. System Components Removal and Installation
RM245 series supports for a variety of different storage options:
Up to 8 x 3.5” hot-swap SAS/SATA HDD or 2.5” SAS/SATA HDD or SSD (RM24508)
Up to 12 x 3.5” hot-swap SAS/SATA HDD or 2.5” SAS/SATA HDD or SSD (RM24512)
2 x 2.5’’ hot-swap SATA HDD/SSD [7 mm or 9.5 mm thickness] or NVMe [7 mm or 15 mm thickness with upgrade kit]
Support for different storage and peripheral options will vary depending on the system model and/or available accessory options
installed.

RM245 Series
System Components Removal and Installation│ 18
2-1 Top Cover Installation
Figure 12 Front top cover installation
1. Align the guide pins of this cover with the grooves on the chassis base, and slide it toward the front panel until locked into place.
2. Secure this cover with two screws as shown.
Figure 13 Rear top cover installation
1. Align the guide pins of the cover with the grooves on the chassis base, and slide it toward the front panel until locked into place.
2. Secure this cover with two screws as shown.

RM245 Series
System Components Removal and Installation│ 19
2-2 HDD Cage Installation
Figure 14 RM24508 HDD cage installation
1. Align the guide pins of the HDD cage with the grooves on the chassis base, and push this cage backward the front panel until
locked into place.
2. Secure this cage with two screws as shown.
Figure 15 RM24512 HDD cage installation
1. Align the guide pins of the HDD cage with the grooves on the chassis base, and push this cage backward the front panel until
locked into place.
2. Secure HDD cage with two screws as shown.
NOTE: All cage SKUs follow the same removal and installation guidelines.

RM245 Series
System Components Removal and Installation│ 20
2-3 Hot-swap HDD Assembly Maintenance
Figure 16 3.5” Hot-swap HDD assembly installation
1. With the lever open, insert the HDD assembly into the drive bay until the end of the HDD cage.
2. Push down the lever to lock it into place.
Figure 17 3.5” Hot-swap HDD assembly removal
1. Press the tray button to release the lever as shown.
2. Pull the HDD assembly out of the drive bay.